﻿using System;
namespace TicTacToe
{
    public interface IPiece
    {
        String Repl { get; }
    }
    public class CCross : IPiece
    {
        public String Repl
        {
            get
            {
                return "X";
            }
        }
    }
    public class CCircle : IPiece
    {
        public String Repl
        {
            get
            {
                return "O";
            }
        }
    }
    class CNull : IPiece
    {
        public String Repl
        {
            get
            {
                return " ";
            }
        }
    }
}
